Much better than with the lags! By the way, you have setPaintOrder methods in your menu worlds in the act methods. Better put them in their constructors.

You better get a good score here, before you say this. :P Are they random created or did you make a list of possible tasks? If they are not random, it would be easy for you of course...

Are you sure that this is based on "http://www.greenfoot.org/scenarios/1079"? It does not seem like they have anything in common.

By the way, if you create your world with "super(500, 600, 1, false);" instead of "super(500, 600, 1);", you can make the walls appear outside the visible world and then scrolling inside. This way they won't appear that unrealistic. I did not only see this problem in your FB-remake.

Dieses Interface steht ja in einer Klasse (hier in Darkness). Hat es irgendetwas zu bedeuten, wo es steht oder spielt es überhaupt eine Rolle?